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Security report for dtocz.cz

DTO CZ s.r.o. · Education · Czech Republic

High risk. 8 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

48/100

Risk levelHigh

0–100, higher is better. How it is calculated

DTO CZ s.r.o. is a Czech Republic-based educational and consulting company specializing in professional training, courses, seminars, retraining, qualification exams, and certifications. The company also operates an e-shop for standards and publications and offers rental services for halls and classrooms. With a history dating back to 2003 and a parent organization, the Czech Union of Scientific and Technical Societies, DTO CZ holds a solid market position serving thousands of clients annually. The website reflects a professional and consistent brand image targeting individuals and organizations seeking educational services within the Czech Republic. Technically, the website employs modern tracking and analytics tools such as Google Analytics (both Universal and GA4), Facebook Pixel, and Cookiebot for consent management. The site is mobile-optimized with good SEO practices and clear navigation. However, no CMS or hosting provider details are explicitly detected. Performance is moderate, and accessibility is basic but functional. From a security perspective, the site uses HTTPS and cookie consent mechanisms, but lacks visible security headers in the HTML source, which could be improved. No incident response or explicit security policy pages are found. The absence of WHOIS data reduces transparency and trustworthiness, although the website content and business information appear legitimate and consistent. Overall, DTO CZ s.r.o. presents a trustworthy and professional online presence with room for improvement in security header implementation and WHOIS transparency. Strategic recommendations include enhancing security headers, publishing incident response contacts, and regular third-party script audits to strengthen security posture and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

8 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

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Keep watching dtocz.cz

This scan found 24 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
62
Security headers
20
Email security
70
DNS health
75
Network security
20
GDPR outside view
40
Average
48

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

DTO CZ s.r.o. operates in the education sector, focusing on professional development and certification services in the Czech Republic. The company leverages partnerships with recognized organizations and maintains a diversified service portfolio including conferences, courses, retraining, and e-commerce for standards. The business model is service-oriented with additional product sales. The presence of GDPR and cookie compliance indicates regulatory awareness. The company targets both individual learners and organizational clients, positioning itself as a medium-sized player with a long-standing market presence. The partnership ecosystem and clear contact information support credibility and client trust.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and cookie consent implemented. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security is a notable gap. No vulnerabilities or exposed sensitive data were detected in the HTML content. The absence of an incident response page or security contact reduces readiness for handling security incidents. Compliance with GDPR is evident through privacy policies and cookie management. Overall, the security posture is adequate but could be enhanced by implementing recommended headers and publishing security policies.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Strict-Transport-Security.
  2. Publish an incident response policy and provide dedicated security contact information to improve transparency and readiness.
  3. Conduct regular audits of third-party scripts and tracking tools to mitigate potential vulnerabilities.
  4. Enhance accessibility features to improve inclusivity and compliance with standards.
  5. Increase WHOIS transparency or provide domain registration details on the website to improve trustworthiness.

Contact details published on the site

Addresses
Legal name
DTO CZ s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DTO CZ s.r.o.
Description
DTO CZ s.r.o. is an educational and consulting company offering courses, seminars, retraining, qualification exams, certifications, and sale of standards and publications. They also provide conference services and rental of halls and classrooms.
Key services
Conferences, Courses and seminars, Retraining, Qualification exams, Certification of persons, Sale of standards and books, Rental of halls and classrooms
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Google Analytics (Universal Analytics and GA4), Facebook Pixel, Cookiebot, Custom CSS and JS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure forms with required fields

Analytics and tracking

Services
Google Analytics (Universal Analytics and GA4), Facebook Pixel
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Cookiebot
Transparency
good

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. No WHOIS data available, which is uncommon and reduces transparency.
  3. Strong GDPR and cookie compliance with visible policies and consent mechanisms.
  4. Use of multiple tracking and analytics tools with consent management.
  5. No visible security headers detected in HTML source; recommend header audit.
  6. Business information is clear and consistent with Czech educational sector.
  7. No signs of adult or questionable content; content is safe for general audiences.
  8. Multiple partner domains linked, indicating established partnerships.
  9. No incident response or security policy pages found.
Technical notes

Notes

The website uses a combination of custom CSS/JS and popular third-party tools such as Google Tag Manager, Google Analytics, Facebook Pixel, and Cookiebot for tracking and consent management. The HTML structure is valid with proper meta tags for SEO and social media integration via Open Graph. Mobile optimization is good with responsive design elements. Performance is moderate, with some asynchronous loading of scripts to improve speed. No CMS or hosting provider is explicitly identified, suggesting a custom or proprietary platform. The site could benefit from enhanced accessibility features and security header implementation to reduce technical risks.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 45/100High34 findingsView report
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